Ore separator



A O. TAYLOR Feb. 10, 1931.

ORE SEPARATOR Filed Dec. 18, 1929 .15. 0.1219 Zox R ATTORNEY PatentedFeb. 10,

ALANSON o. TAYLOR, or mivoomv, NEBRASKA.

01m sEPAnA'rr'oR' Application'filed December 13, 19 29; s'riai'nq; 3114,973. I

This invention relates to a separator for ore after the same has beencrushed, the generalobject of the invention beingto provide means forsubjecting the ore, as it moves downwardly through a chute,to' anupwardly moving stream'of air which is divided into two parts by a boardprovided with swinging rifles so that the ore is subjected to twoconcentrations, one stream of air removing the lighter particles beforethe ore reaches the board and the other stream removing lighterparticles after the ore passes through the board.

A further object of the invention is to provide feeding means forfeeding the ore from a hopper into the chute which leads to the airchute, so as to prevent the ore from clogging and to feed it in an evenstream to the air chute and to place said chute at an incline which canbe changed according to the material to be handled;

This invention also consists in certain" other features of constructionand in the combination and arrangement of the several parts, to behereinafterfully described, illustrated in the accompanying drawing andspecifically pointed out in the appended claims. I

In describing the invention in detail, reference will be had to theaccompanying drawing wherein like characters denot'e'like orcorresponding parts throughout the several views, and in which Figure 1is a vertical sectional view through the device.

' Figure 2 is a section on line 22 of Figure '1. I

In these views, the numeral 1 indicates the casing of the device-and2indicates the ore hopper which is placed in the upper part of thecasing. The diagonally arranged air chute is shown at 8 and thedischarge 4 of a fan casing 5 is connected with the lower end of thechute 3. A discharge spout 6' is connected with the upper end of thechute and extends downwardly to a dump or other point of discharge. Adelivery chute 7 is connected with the bottom part of thelower end ofthe chute 3 and passes through the bottom of the casing and dischargesinto an ore receiver 8. A discharge chute 9 connects the bottom of thehopper with the upper part of the chute3 at a point substantially waythe'ends of said chute 8. v

The fan is shown atqlO and is driven from any suitable means, suchas aimotor 1 1, and the fan shaft is belted to a shaft'12 on which is placeda groovedroller 13 placed in the bottom of the'hopper and acting to feedthe crushed ore therein to'the chute 9,.

A rifle board 14 is placed in the chute 3 and extends longitudinallythereof, this board being "adjustable toward and away fromv the bottomof the chute 3 through means of the bolts and wing'nuts 15 carried bythe side pieces of the board and passing through the slots 16in thesides of the chute 3. Rifle plates 17 are pivoted at their upper edgesto the board, as shown at 18, downward movement of the rifle platesbeing limited by the stops 19, and the lower ends of the rifle platesare curved. upwardly, as shown at 20. L

From the foregoing it will be seen that the air produced by the fan isdeliveredtothe chute 3 and moves upwardly through the chute, a screen 21being arranged in the part twhich acts to evenly distribute the air tothe chute. This air is divided into. upper and lower currents by therifle board, so

that two concentrations of the ore takes place, one by the upper currentacting 011 the ore and removing therefrom lighter particles before theore reaches the swinging rifles. The upper current of air distributesthe ore over the rifle board and the second or lower current,passingunder the rifles, also acts to remove. lighter particles 'fromthe ore. The swinging rifle plates act-as dampers for holding thecurrent of air close to the top of the ore on the bottom of the chute 3.The heavy particles of ore slide down the chute 3 into the discharge 7,which is provided with agravity gate 22 which opens under the weight ofthe air and permits the ore todrop into the receptacle 8. The swingingrifle plates also act to retard the movement ofthe ore so that it can beefl'ectively acted on by the lower current. The screen 21 can bereplaced by another one of finer or coarser mesh so as to equalize theair current according to the kind of material being acted on.

The arrangement of the parts of this in- 5 vention is such that no dustescapes except at the discharge 6, and this can be extended any distancefrom the apparatus.

It is thought from the foregoing description that theadvantages andnovel features of the invention will be readily apparent.

It is to be understood; that changes may be made in the construction andin the combination and arrangement of the several parts, provided thatsuch changes fall within the scope of the appended claims.

What I claimis 1. An ore separator comprising a casing, a hopper in thecasing, a diagonally arranged chute into which the hopper discharges,

29 means for causing air to pass upwardly through the chute, a riflieboard longitudinally arranged in the chute and dividing the air currentinto upper and lower parts, a discharge chute connected with the upperend of the air chute, a discharge chute connected with the bottom partof the lower portion thereof and means whereby the riflle board can beadjusted toward and away from the bottom part of the chute.

30 2. An ore separator comprising a casing, a hopper in the casing, adiagonally arranged chute into which the hopper discharges, means forcausing air to pass upwardly through the chute, a riflle boar-dlongitudinally arranged in the chute and dividing the air current intoupper and lower parts, a discharge chute connected with the upper end ofthe air chute, a discharge chute connected with the bottom part of thelower portion thereof, and riilie board including pivoted riffie plateshaving upwardly curved lower edges.

3. An ore separator comprising a casing, a diagonally arranged air chutetherein, a

fan having its discharge connected with the lower end of the chute, adischarge pipe connected with the upper end of the chute, a screen inthe discharge of the fan, a hopper in the casing discharging into theair chute at substantially the center thereof, an adjustable riiileboard longitudinally arranged in the air chute, rifiie plates havingtheir upper edges pivotally connected with theboard and their loweredges curving upwardly, said rif- 5 He board dividing the air currentinto upper and lower parts, a discharge chute connected with the bottomportion of the lower end of the chute and a gravity. gate in saiddischarge chute.

eo In testimony whereof I aifix my signature.

ALANSON O. TAYLOR.

